Nut-lock



' H.- HENDERSON.

(No Model.) I

No.v 522,562.

ZM Inventor.

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' Witnesss.

VUNITED STATES PATENT OFFICE.

HENRY HENDERSON, OF BFFALO, NEW YORK, ASSIGNOR VTO FRANCIS HENDERSON, OF PHILADELPHIA, PENNSYLVANIA.

-N uT-LOCK..

, .SPECIFICATION frmingpart OfLeaers Patent No. 522,562, dates my s, 1894.

Application tiled March 5, 1894.

` quired, all of which will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings, in which-H-A l Figure l, isa. sectional side elevation slightly in perspective, showing a portion of two rails and shplate, andv my l device connected thereto for holding the nut in place.y Fig. 2, represents a horizontal section in or about liney a o., Fig. 1, showing the twoportions of a rail, the two iish-plates and bolts and a top view of two nut locks for holding the nuts in place on the bolts. Fig. 3, is a detached side elevation of the nut lock. Fig. 4, represents a detached top view of the same.

Referring to the drawings in detail, 1 and l, represent portions of an ordinary T rail,

52 and 2, the sh plates, the numerals 3, represent the bolts and 3 the boltlheads for holding the ish-plates and rails in position, and 4 and 4?, are the bolt-nuts, all being Well known, and shown for the purpose of illustrating my invention. Y

The nut locking device consists of a single piece of steel having a circular spiral bend 5, of the required size to allow the bolt 3, to pass through easily. From this circular spiral bend the portion 6 extends tangentially outward in a substantially straight line and is bent at `or about the point 7, so that the portion 8, extends forward toward or over the center of the circular spiral portion 5, terminating at or about the point 9.

It will be noticed, by referring to Fig. 4,

that the portion 8, is also provided with a latseriu No. 502,309. (No man.)

outward and then forward so that the portion v12, is substantially parallel with the opposite' portion 6. The object of this construction is to bring the portion 12,'into the proper posi" tion to lie fiat on one of the sides of a nut and thereby prevent y it from turning or getting loose. v

The construction of the device is very sim- .ple and easily understood. In operating with the iiat sides of the nut as it comes into position during the operation of turning it. This construction effectually prevents the nut from turning back or getting loose, but to give an additional security, the circular spiral portion, 5, acts as a spring against ,which the nut is forced as it is being screwed up against it.

The device can be made and used without the offset l0, if desired and still be made to operate, and the spiral feature of bend 5, may be dispensed with. ,p p I claim as my invention- A nut lock consisting of a single bar of steel having a circular bend 5, through whichithe bolt passes, atangentially extending straight portion provided with a return bend 7, terminatingY in Va straight portion 8, having an offset 10, the straight portion 12, extending laterally in front of. thebend 5, far enough to rest with a spring force on the flat side of a nut substantially as described.

lHENRY HENDERSON,

Witnesses:

JAMES SANGSTER, J. M. CALDWELL.

i eral bend or oif set bend 10, which extends I 

